Observation data in the equatorial mesosphere and lower thermosphere taken by the MF radar at Pameungpeuk (binary format)

2016-07-21 16:54:00

The eastward, northward and vertical wind data in the equatorial mesosphere and lower thermosphere (52-122 km) estimated from the observation data of the MF radar at Pameungpeuk, Indonesia (7.65S, 107.69E). The data are stored in the binary (SSWMA: Spaced Sensor Wind Measurement Analysis) file named (year)(month)(day).sswma. The SSWMA file also includes radar status data (operation frequency, receiver amplitude and signal noise ratio etc.) and general information about the data file itself. The upper limit of observation range was changed from 98 km to 122 km on the nightside (17:30-06:00 LT) as a regular operation after October 18, 2007. There were occasionally test operations extended up to 122 km in the period from April 19 to October 17, 2007.

If you would like to use the following data for scientific purpose, please read and follow the DATA USE POLICY (http://database.rish.kyoto-u.ac.jp/arch/iugonet/pon_mf/png/daily/data_policy/Data_Use_Policy_e.html).

Online

Open

Binary

PT104S

-7.646

-7.646

107.688

107.688

52

122

File magic number

File magic number (0x23110001)

1

SSWMA record number

The number of SSWMA records in this file (0 or more)

1

Offset number

Offset to start of first record from start of file

1

Unit ID or serial number

Unit ID or serial number

1

Site name

Site name

1

Record magic number

Record magic number (0x23120001)

1

Record counter

Record counter (0, 1, ...)

1

Offset to start of next record from start of this record

Offset to start of next record from start of this record (bytes)

1

Offset to start of data from start of this record

Offset to start of data from start of this record (bytes)

1

Epoch time stamp

Epoch time stamp of start of acquisition

second

Millisecond component of time stamp

Millisecond component of time stamp (0,..,999)

millisecond

Experiment tag name

Experiment tag name (null terminated)

1

Experiment comment

Experiment comment (null terminated)

1

Site latitude

Site latitude (from GPS) in degrees (positive implies North)

degree

Site longitude

Site longitude (from GPS) in degrees (positive implies East)

degree

RTC GPS engine status

RTC GPS engine status (0 = SEEK, 1 = LOCK, 2 = NOT FITTED, 3 = UNAVAILABLE)

1

Operating frequency

Operating frequency

Hz

First local oscillator frequency

First local oscillator frequency

Hz

Number of IP/QP channels

Number of IP/QP channels acquired (number of receivers * 2) or 2*N

1

Sampling resolution

Sampling resolution

m

Number of range gates sampled

Number of range gates sampled

1

Start range of sampling

Start range of sampling

m

PRF

Pulse repetition frequency

Hz

Integrations

Integrations

1

Number of data points acquired

Number of data points acquired

1

Polarization

Polarization (0 = "O" mode, 1 = "E" mode, 2 = linear mode1, 3 = linear mode 2)

1

Receiver filter setting index

Receiver filter setting index (0, 1, 2, 3)

1

Number of modes in use

Number of modes in use (1 or 2)

1

Dual mode index number for these data

Dual mode index number for these data (0 or 1)

1

Dual mode range correction

Dual mode range correction applied to these data

m

Number of receivers used in analysis, K

Number of receivers used in analysis, K (normally, K = 3)

1

ACF length

ACF length to calculate in seconds

second

ACF length of fit in lags

ACF length of fit in lags

1

Sea scatter to atmospheric power ratio limit

Sea scatter to atmospheric power ratio limit

1

Sea scatter notch

Sea scatter notch (0 = no, 1 = yes)

1

Lowest height to notch sea scatter

Lowest height to notch sea scatter

m

Highest height to notch sea scatter

Highest height to notch sea scatter

m

Number of spectral bins to notch to remove sea scatter

Number of spectral bins to notch to remove sea scatter

1

Minimum receiver signal-to-noise ratio allowable

Minimum receiver signal-to-noise ratio allowable

dB

Minimum cross correlation allowable

Minimum cross correlation allowable

1

Maximum normalized time discrepancy allowable

Maximum normalized time discrepancy allowable

percentage

Antenna coordinates

Antenna coordinates (Range (m), Bearing (deg)) - N pairs

m, degree

Receiver gains

Receiver gains (dB) - N values

dB

List of receivers used for analysis

List of receivers used for analysis - K values between 1 and N

1

Range

Range

m

Analysis status code

Analysis status code

1

Zonal wind

Zonal wind (eastward wind is positive.)

m/s

Meridional wind

Meridional wind (northward wind is positive.)

m/s

Vertical wind

Vertical wind (upflow is positive.)

m/s

Uncorrected zonal wind

Uncorrected zonal wind (eastward wind is positive.)

m/s

Uncorrected meridional wind

Uncorrected meridional wind (northward wind is positive.)

m/s

Corrected fading time

Corrected fading time

second

Uncorrected fading time

Uncorrected fading time

second

Normalized time discrepancy

Normalized time discrepancy

percentage

Ellipse major axis length

Ellipse major axis length

m

Ellipse axial ratio

Ellipse axial ratio (major/minor)

1

Ellipse orientation

Ellipse orientation (bearing in degrees)

degree

Sea scatter power calculated for this range

Sea scatter power calculated for this range (0 = no, 1 = yes)

1

Sea scatter removal algorithm applied to this range

Sea scatter removal algorithm applied to this range (0 = no, 1 = yes)

1

Receiver saturation

Receiver saturation (number of data points), one per acquired receiver channel

1

Channel offset

Channel offset (digitiser units), one per acquired digital channel

1

Receiver amplitude

Receiver amplitude (linear units), one per acquired receiver channel

1

Receiver SNR

Receiver SNR (dB), one per acquired receiver channel

dB

Cross channel NSR

Cross channel NSR (dB), one per analyzed receiver channel pair

dB

Sea scatter relative power

Sea scatter relative power (dB), one per acquired receiver channel

dB